Spray coil



1. E. COLVIN SPRAY COIL Original Filed May 21. 1921 Patented Oct. 30,1923.

STATES Isaac E. COLVIN, or ROCHESTER, NEW YORK, ASSIGNOR TO THE PFAUDLERooivr PANY, or ROCHESTER, new YORK. p

SPRAY ooIL,

Application filed May 21, 1921, Serial No. 471,440. Renewed June 24,1922. Serial m; 570,718.

To all whom it may concem:

Be it known that I,IsAAo E. CoLvrN, a citizen of the United States,residing at Rochester, in the": county of Monroe, State 5 of New York,have invented a new and use ful Improvement in Spray Coils, of which thefollowing is a specification.

This invention relates to spray coils and the principal object thereofis to produce a rigid and cheap construction whereby a liquid may bedirected against the wall of a tank or some other surface in a uniformfilm. A preferred form of the invention is illustrated in theaccompanying drawings, in which- Fig. 1 is a top plan of a spray coilembodying part of the present invention;

Fig; 2 is a side elevation of a spray coil mounted on a jacketed tank;

Fig. 3 is fragmentary sectional plan view, enlarged, showing a preferredmanner of attaching the coil to the tank jacket.

Fig. 4 is a sectional elevation on the line 4.4: of Fig. 3; and

Fig. 5 is a perspective view of a detail. In the cooling of processedmaterials which are treated in jacketed tanks or containers, it has beencommon to flood the jacket with a cold liquid, such as water or 30brine, so that the heat in the treated material will be rapidlyabsorbed. This practice is wasteful, for the reason that heat from thesurrounding atmosphere is also absorbed by the liquid in the jacket andso 5 raises the temperature of the cooling medium without anycorresponding benefit to the process.

If, on the other hand, the cooling liquid is directed in a series ofjets, against the wall of the tank only, and is not permitted to splashagainst the jacket, the latter becomes in effect an enclosing cover foran air space, and the external atmosphere cannot readily impart heat tothe cooling jets. The latter are so directed that in running down thetank walls they combine to form a thin film, which is very effective inabsorbing the heat of the tank contents, requiring a minimum of coolingwater or brine.

In the present instance a cylindrical tank 10 is indicated, having a tophead 11 that is extended as at 12 to form a sealer or connecting flangebetween the tank wall and the surrounding jacket 13. The air space 14enclosed by the jacket may be of suitable proportions to accord with theother details. To conveniently provide a channel whereby uniformdistribution of the cooling liquid may be accomplished, a pipejor tubeis formed in a single coil 15, the ends being autogeneously welded.Couplings 16 are also welded to the pipe to provide inlets'from thesource of supply, and thus there are no screwed joints which might leak.The coil as shown is slightly smaller in diameter than the jacket 13. vp I r The preferred method of connecting the coil to the tank consistsin mounting it on the sealer 12 by means of nipples 17 that may beformed from short lengths'of tubing, flattened and shaped as at 18 and19, tofit the coil and the sealer, respectively. These nipples, thecoil,;and the sealer are connectedby welding at 20-a'nd 21, the nipplesbeing located at regular intervals as shown in Figs. land 2. I

To provide means whereby the cooling liquid carried through the coil 15will be directed in a series of streams or jets against the tank wall10, without the use of sepa- 8 rate jet heads or nozzles, divergingholes of small diameter, as at 22, are drilled through the sealer 12,within the nipples 17. To in sure these holes being properly located itis preferred that they be drilled after the coil has been attached tothe tank. To this end openings 23 are made through the wall of the pipe,approximately conforming to the inner peripheries of the nipples 17. andother openings 24 in the outer wall of the pipe have internally-threadedbushings 25, welded in place. Through the latter a drill may be insertedand operated to make the holes 22 as shown through the sealer 12connecting the coil with the jacket space.

The threaded bushings 25 may be provided with ordinary pipe plugs 26,which when removed give access to the holes 22 so that the latter may becleaned with a wire.

If the nipples and bushings are located at suitable intervals around thecoil 15. the cooling liquid when turned into the coil under a. lowpressure will be broken up into many small streams, all of which willmerge together immediately below the point where they strike the tankwall, after issuing from the drilled holes 22. Thus the tank wall iscovered by a thin film of cooling liquid.

At the correct pressure the jacket will not be touched by the liquid andthe lattervwill absorb heat only from the tank contents.

Under some manufacturing conditions a cold mass of material may becontained in the tank and it would then be desirable to direct a hotliquid, such as oil, through the coil, utilizing the same construction.

This invention is not limited to the exact details described and shownin the drawings,

but may be somewhat modified, within the scope of the following claims.

I claim 2- 1. The combination, with a vessel having a jacket providedwith separated groups of divergent openings through its upper portion,of a pipe conforming approximately to the periphery of the jacket andhaving elongated openings in its inner side; nipples surrounding bothsaid elongated and divergent openings and connecting the pipe with thejacket; and removable plugs in the pipe so located that all of saidopenings are accessible from-the exterior when said plugs are removed.

2. The combination, with a vessel having a. jacket provided withseparated groups of divergent openings through its upper por' tion, of apipe having elongated openings spaced in accordance with said groups ofdivergent openings; and nipples surrounding the elongated openings andcorresponding groups of divergent openings, said nipples being welded tothe pipe and to the jacket.

3. The combination, with a vessel having the groups of divergentopenings; nipples welded to the pipe and to the jacket so as to encloseand connect each elongated opening with a corresponding group ofdivergent openings; and means whereby the divergent openings may berendered accessible from the exterior of the pipe.

4. The combination, with a vessel having a jacket provided withseparated groups of divergent openings, through its upper portion, of apipe having openings through its inner and outer peripheries; nipplescon necting saidpipe with said jacket, and with groups of the divergentopenings, said nipples also corresponding with one set of openings inthe pipe; and means whereby the divergent openings in the tank walls mayhe reached through said nipples.

. 5. The combination with a vessel having a jacket provided with aplurality of separated groups of jet openings there-in directed towardthe vessel, of a pipe surround ing the vessel outside the jacket havinga plurality of elongated openings one for each group of jetopenings, themargins of the openings in said pipe being secured to the jacket, and aplurality of removable plugs in the outer side of the pipe one oppositeeach of the openings therein, to permit access to the openings in thejacket.

ISAAC E. COLVIN.

